30% (2006)

30% (2008)

49% (2005)

16% (2003)

38% (2004)

54% (2008)

49% (2005)

48% (2007)

54% (2004)

36% (2006)

46% (2005)

54% (2006)

51% (2006)

52% (2009)

67% (2007)

40% (2009)

45% (2005)

42% (2007)

43% (2007)

40% (2006)